PSN J07285387+3349106 in NGC 2388: an extremely rapidly declining luminous supernova

TL;DR

This paper reports on the photometric observations of an exceptionally rapidly declining luminous supernova in NGC 2388, highlighting its fast decay rate and high peak brightness.

Contribution

It provides detailed BVRI photometry of one of the fastest supernovae observed, expanding understanding of supernova decline rates and luminosities.

Findings

Decayed by 3.6 mag in 20 days in R band

Peak absolute R magnitude exceeds -18.7, possibly as high as -20.1

Among the fastest declining supernovae recorded

Abstract

We present CCD BVRI photometry for PSN J07285387+3349106 in NGC 2388 collected from 2015 February 17 until March 17. Decaying by 3.6 mag in the R band in the first 20 days post-maximum, this object is among the fastest supernovae observed to date. The peak absolute R magnitude exceeds -18.7 and may be as high as -20.1.